OPERATING LEASES

12 Months Ended

Dec. 31, 2017

OPERATING LEASES

Leases are primarily operating leases for leaseholds on EfW facilities, as well as for trucks and automobiles, office space and machinery and equipment. Some of these operating leases have renewal options. Expense under operating leases was $22 million, $19 million, and $16 million, for the years ended December 31, 2017, 2016 and 2015, respectively.

The following is a schedule, by year, of future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2017 (in millions):



	2018		2019		2020		2021		2022		Thereafter		Total
Future minimum rental payments	$	9	$	9	$	8	$	7	$	7	$	31	$	71